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Updated: May 21, 2025

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立方Li6.25Al0.25La3Zr2O12的相位演变和热力学研究通过高温X射线衍射进行研究

Øystein Gullbrekken1, Kristoffer Eggestad1, Maria Tsoutsouva1

  • 1Department of Materials Science and Engineering, Norwegian University of Science and Technology, NTNU, Trondheim N-7491, Norway.

Inorganic chemistry
|March 18, 2025
PubMed
概括

了解立方,,氧化 (LLZO) 的形成热力学是固态电池的关键. 这项研究揭示了过量和样品厚度如何影响LLZO结晶和稳定性.

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An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
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Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
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